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104
HIACE (EWD622E)
Engine Control (2KD–FTV)
8 A1 A10 A
C9
2
1
(BAT) (BAT)
B
3 7
E D U R e l a y
B – R
1
2 D 5 5
B–R
G
B–R
R – L
B
B – R
B – R
G – Y
B – R
R – L
B – R
B – R
B – W
GREL BATT EGR
MREL+BIREL
15 B
1
2
4 DB3
B – R
G – Y
80AGLOW
1E1
3 1
5 2
1
G
1
MAINRelay
1 1
GLOWRelay
DB114
B2
2 1J 4 1J
25AEFI
1J3
W–B
D53
B – W
B – W
W – B
B
B
W – B
W – B
W – B
2A
1J71J8
B
1J
1
B–R
BR
BR
B9(A), B7(B), D3(C), D1(D)Engine ECU
J
u n c t i o n
C
o n n e c t o r
Glow Plug
V
R V ( E G R )
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1 B1 A6 A2 A3 A
21 D22 D23 D24 D25 D
20 A31 D19 D29 D28 D20 D29 C4 C
3 B1 A
2 B1 B3 A2 A
D 4 9 D
4 6 D 3 2
1
2
1
2
A 2
B 2 9
2
1
1
2
( W i d e )
( W i d e )
B 3 9
B 3 8
D 4 4
D 2 4
D 2 7
D 2 5
D 2 6
1
B13(A), B15(B)
D48(A), D50(B)
B9(A), B7(B), D3(C), D1(D)
Y–R Y–R Y–R Y–R Y–R
L–B
Y–R
BR
BR
R R Y Y
B R L Y Y L G R R G
B – Y
Y – B
G – Y
G – R
Y
Y G –
R
G – Y
Y –
B
B –
Y
G
R
G L
Y
L B R
R
Y – R
Y – R
Y – R
Y – R
Y – R
Y – R
L – B
B R
B – R
B – R
B R – L
R – L
Y – R
R R – W
R
R
Y – R
Y – R
Y – R
Y – R
Y – R
L – R
3
23
GNDINJ3COM2INJ2INJ4COM1INJ1# 40# 30# 20# 10INJF
LUSL VLU THIA E2 THF THW THA RTHW
E2VCE1+B
# 4# 3# 2#1INJF
VAFDUTY
B3
16 DB1
9 BD1
20 AB1
9 DB1
19 AB1
8 DB1
8
2
B2 B5
4 BD1BD111
3
1
2
1
BD113 BD114 BD110 BD13 BD15 BD112
1
2
2
1
1
21
2
A4 A5
2
B7 B6
BD117 BD115 BD16 BD116 BD17
8 DB3
A8
+B
B
B–R
BR
BR
Engine ECU
Injector Driver (EDU)
W a t e r T e m p .
S e n s o r
( R a d i a t o r )
J u n c
t i o n
C o n n e c t o r
J u n c
t i o n
C o n n e c t o r
F u e l I n j e c t o r
( N o .
1 )
F u e l I n j e c t o r
( N o .
2 )
F u e l I n j e c t o r
( N o .
3 )
F u e l I n j e c t o r
( N o .
4 )
J u n c t i o n
C o n n e c t o r
F u e l T e m p .
S e n s o r
Throttle BodyAssembly I
n l e t A i r T e m p .
S e n s o r
( I n t a k e
M a n i f o l d )
I n l e t A i r T e m p
. S e n s o r ( A i r C l e a n e r )
W a t e r T e m p .
S e n s o r ( E n g i n e C o o l a n t )
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HIACE (EWD622E)
Engine Control (2KD–FTV)
W – B
EC
1
2
9
11
2
1
D3
19 DO19 DO1
6 DB2DB21
PIM PR
CAN+ CAN–
G–
E01E02PCV–PCV+NE–NE+G–G1E1
PIM EGLS PCR1 VC
NE NE–
VCE2VCE
CAN+ CAN–
4 1
10
53112
1 2
3
2
311231
32
Y – R
L – B
Y – R
L – B
Y – R
L – R
L – B
L – B
P P P
G R
( S h i e l d e d )
B R
B R
Y
( S h i e l d e d )
L
B R
P Y – R
L W
L W
W L
B R
B R
B R
B R
L–B
Y–R Y–R Y–R
L–B L–B L–B
BR
D43
D
5 1
D
5 2
BR
D
4 5
BR
D 4 4
D 1 0
O3(A)
D 1 7
D 4 7
B R
( S h i e l d e d )
( S h i e l d e d )
BRBR
B2
12
13
B
3 6
W – B
W – B
E2 VC
EGLS
C28 33 C D26 D18 B22 B21
C7 C23 C31 D27 D34 D2 D1 D6 7 D 6 B
BR
B9(A), B7(B), D3(C), D1(D)Engine ECU
J
u n c t i o n
C
o n n e c t o r
C a m s h a f t
P o s i t i o n S e n s o r
C r a n k s h a f t
P o s i t i o n S e n s o r
Junction Connector
J u n c t i o n
C o n n e c t o r
F
u e l P r e s s u r e
S
e n s o r
S u c t i o n
C o n t r o l V a l v e
T
u r b o P r e s s u r e
S
e n s o r
E
G R V a l v e
P
o s i t i o n S e n s o r
TransmissionControl ECU
A21 A20
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107
12 DB1
DB36
B – R
R – L
B – R
B – R
1
23
4
21 5E5E9
15AIGN
B 2
IGSW ST1–
C o o l i n g F
a n E C U N o .
2
DB23 DB28 DB117
FANRFC2RFCVPAEPAVCPAVPA2EPA2VCP2
STP
ALT
NSWSTA
VCP2 EPA2 VPA2 VCPA EPA VPA
1 2 3 4 5 6
R – L
W – R
B W W – L
L
R – W
W
W
B – W
L G – B
P – L
W – L
W – L
P – L
L G – B
BR
B9(A), B7(B), D3(C), D1(D)
B1 C o o l i n g F
a n E C U N o .
1
F A N 3 R e l a y
(IG)
A9 B14 B15
D8
6 AA7
A27 A29 A23 A26 A28 A22 D12 D11 D13
BR
(BAT)
10ASTOP
G – B
5J3
HB417
G – B
HB419
5J4 5E6
20
19 R – W
R – W
R – W
R–W
B 3 5
B –
W
B 3 4
B–W
7. 5AST
2
4
9
7
N
L B
P
D 3 7
B–W 13
DB1
4
5
10
R
B – W
B – W
DB3
3
19
16
S T R e l a y
R
(ST)
DB3
7R
B–W
(A/T)
(A/T)
B – W
( M / T )
18
B34
R
8
9
DB32
B3
W
W
M
D 6 ( B )
B 3 5
Accelerator Position Sensor
S t o p L a
m p S W
Engine ECU
JunctionConnector
J u n c t i o n
C o n n e c t o r
J u n c t i o n
C o n n e c t o r
J u n c t i o n
C o n n e c t o r
A l t e r n a t o r
N e u t r a l S t a r t S W
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108
HIACE (EWD622E)
Engine Control (2KD–FTV)
HB157
SPD THWO
P – L
Y
Y
B17 A2
B – Y
B R
W – B
B R
B R
W – B
P – B
W
B
B
5 5S
459
167
7. 5AOBD
13
5E7
5H4 5S3
6C15
6C16
H2
6F2
6F1
HB412
DB29
TAC SG CG
BATSILTC
3 5E
HB47HB118
WFSETACH
SIL TC
WFSE
15
W P
B – Y
L – R
B – Y
L – R
W
BR
H23
L – R
(BAT)
A18 A11
A4 A19
23 B24 B
CANLCANH
R W
H18
2
B
CANLCANH
CANL CANH
R W
W B
W B
W L
614
1110
HB42211 HB4
A1 A2
1 B2
1 C C
B9(A), B7(B), D3(C), D1(D)
12 A14 A
WGIND
G – R
B – W
Y
P–L
G–R
B–W
6C14
B – Y
B–Y
W – B
Engine ECU
A/C Amplifier
DLC3
P
Junction ConnectorH3(A), H4(B), H5(C), H6(D)
W – B
W – B
B3
12 5E
1 5S
D1
ST–Plug
1
2
3
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1 5M
G – R
B – W
B – R
10AMET IGN
32 25
C h e c k
E n g i n e
G l o w
HB121 HB160
G – R
B – W
(IG)
EGW L
Y
P–L
G–R
B–W
H20
+S SI
B
B 3 5
5 DB4
(BAT) (IG)
D38
ESI
IG+
B R P
B R P
B R P
L – R
L – R
L – R
L – R
2 5E
10AGAUGE
1
7 DB43 DB4
2
29
P – L
4
7
P – L
P – L
24 5E
14 5D 22 HB1
3
58 HB1
R
R
8 5S
18 5E
10ADOME
2
9 15
2
T e m p .
5
T a c h o m e t e r
E3
S p e e d o m e t e r
IG+
6
S
B – Y
1417
Y
S
B–Y
W – B
W – B
1 HH1
H2
7
E1
J u n c
t i o n
C o n n e c t o r
Speed Sensor
Combination Meter
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110
HIACE (EWD622E)
Engine Control (2KD–FTV)
This system utilizes an engine ECU and maintains overall control of the engine, transmission and so on. An outline of theengine control is explained here.
1. Input Signals
(1) Water temp. signal circuit
The water temp. sensor (Engine coolant) detects the engine coolant temp. and has a built–in thermistor with aresistance varies according to the engine coolant temp. Thus the engine coolant temp. is input in the form of a controlsignal to TERMINAL THW of the engine ECU.
(2) Intake air temp. signal circuit
The intake air temp. sensor is detects the intake air temp., which is input as a control signal to TERMINAL THA of theengine ECU.
(3) RPM signal circuit
Camshaft position and crankshaft position are detected by the camshaft position sensor and crankshaft position sensor.Camshaft position is input as a control signal to TERMINAL G1 of the engine ECU, and engine RPM is input intoTERMINAL NE+.
(4) Throttle signal circuit
The accelerator position sensor detects the accelerator pedal opening angle, which is input as a control signal toTERMINALS VPA and VPA2 of the engine ECU.
(5) Vehicle speed signal circuit
The speed sensor detects the vehicle speed and inputs a control signal to TERMINAL SPD of the engine ECU via thecombination meter.
(6) Battery signal circuit
Voltage is constantly applied to TERMINAL BATT of the engine ECU. When the ignition SW is turned to on, voltage forengine ECU operation is applied via the MAIN relay to TERMINAL +B of the engine ECU.
(7) Started signal circuit
To confirm that the engine is cranking, the voltage applied to the starter motor during cranking is detected and is input asa control signal to TERMINAL STA of the engine ECU.
(8) Fuel temp. signal circuit
The fuel temp. sensor is detects the fuel temp., which is input as a control signal to TERMINAL THF of the engine ECU.
(9) Intake air vacuum pressure signal system
Intake air vacuum pressure is detected by the turbo pressure sensor and is input as a control signal to TERMINAL PIMof the engine ECU.
System Outline
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2. Control System
∗ EGR controlThe EGR control system detects the signals from each sensor, then the current is output to the TERMINAL EGR to controlthe VRV (EGR).
∗ Common rail pressure controlThe target rail pressure is calculated according to the engine status (Accelerator opening, engine speed) andenvironmental change detected by sensors. The fuel amount to be pressure–fed from the supply pump is calculated so asto match the indicated value of rail pressure sensor with the target value and the signal is sent to the intake amountadjusting valve of the supply pump in order to control the rail pressure.
∗ Fuel injection timing controlThe fuel injection timing is controlled by calculating the basic fuel injection timing based on the engine status (Acceleratoropening, engine speed), making corrections according to environmental change detected by sensors, then sending asignal to the solenoid control valve of the injector via the injector driver (EDU).
∗ Fuel injection volume controlThe fuel injection volume is controlled by calculating the basic fuel injection volume based on the engine status(Accelerator opening, engine speed), making corrections according to environmental change detected by sensors and theinside pressure conditions in the rail, then sending a signal to the solenoid control valve of the injector via the injectordriver (EDU).
∗ Pilot injection controlThe fuel injection volume and timing are controlled by calculating the pilot injection volume/timing based on the engine
status (Accelerator opening, engine speed), making corrections according to environmental change detected by sensors,then sending a signal to the solenoid control valve of the injector via the injector driver (EDU).
3. Diagnosis System
With the diagnosis system, when there is a malfunctioning in the engine ECU signal system, the malfunction system isrecorded in the memory. The malfunctioning system can be found by reading the display (Code) of the check engine warninglight.
4. Fail–Safe System
When a malfunction occurs in any system, if there is a possibility of engine trouble being caused by continued control basedon the signals from that system, the fail–safe system either controls the system by using data (Standard values) recorded inthe engine ECU memory or else stops the engine.
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HIACE (EWD622E)
Engine Control (2KD–FTV)
: Parts Location
Code See Page Code See Page Code See Page
48 (LHD) D3 C 53 (*5) 45 (*2)
56 (RHD) 45 (*2) 53 (*5)
48 (LHD) 53 (*5) 45 (*2)
56 (RHD) 45 (*2) 53 (*5)
48 (LHD) 53 (*5) 45 (*2)
56 (RHD) 45 (*2) 53 (*5)
45 (*2) 53 (*5) 45 (*2)
53 (*5) 45 (*2) 53 (*5)
45 (*2) 53 (*5) 45 (*2)
53 (*5) 45 (*2) 53 (*5)
45 (*2) 53 (*5) 45 (*2)
53 (*5) 45 (*2) 53 (*5)
45 (*2) 53 (*5) 45 (*2)
53 (*5) 45 (*2) 53 (*5)
45 (*2) 53 (*5) 42, 49 (LHD)
53 (*5) 45 (*2) 42, 57 (RHD)
48 (LHD) 53 (*5) 42, 49 (LHD)56 (RHD) 45 (*2) 42, 57 (RHD)
45 (*2) 53 (*5) 42, 49 (LHD)
53 (*5) 45 (*2) 42, 57 (RHD)
45 (*2) 53 (*5) 42, 49 (LHD)
53 (*5) 45 (*2) 42, 57 (RHD)
45 (*2) 53 (*5) 49 (LHD)
53 (*5) 45 (*2) 57 (RHD)
45 (*2) 53 (*5) 49 (LHD)
53 (*5) 45 (*2) 57 (RHD)
45 (*2) 53 (*5) 49 (LHD)
53 (*5) 45 (*2) 57 (RHD)
45 (*2) 53 (*5) 48 (LHD)53 (*5) 45 (*2) 56 (RHD)
D3 C 45 (*2) 53 (*5)
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
1 23 (*8) Engine Room R/B No.1 (Engine Compartment Front)
2 28 Engine Room R/B No.2 (Inside of Battery Room)
4 29 Instrument Panel R/B (Under the Glove Box)
* 1 : LHD 2TR–FE * 2 : LHD 2KD–FTV * 3 : LHD 5L–E * 4 : RHD 2TR–FE * 5 : RHD 2KD–FTV * 6 : RHD 5L–E * 7 : 2TR–FE
* 8 : 2KD–FTV, 5L–E
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: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1E 24
1J 25ngne oom a n re an ngne oom o. ngne ompar men ron
5D 30 Instrument Panel Wire and Instrument Panel J/B (Left Side of Instrument Panel)
5E 30 Engine Room Main Wire and Instrument Panel J/B (Left Side of Instrument Panel)
5H
5J
5M
ns rumen ane re an ns rumen ane e e o ns rumen ane
5S
38 (LHD) Instrument Panel Wire and Center J/B (Instrument Panel Reinforcement LH)
38 (RHD) Instrument Panel Wire and Center J/B (Instrument Panel Reinforcement RH)
38 (LHD) Instrument Panel Wire and Center J/B (Instrument Panel Reinforcement LH)
38 (RHD) Instrument Panel Wire and Center J/B (Instrument Panel Reinforcement RH)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
64 (LHD)
72 (RHD)ow o ea amp re an ngne oom a n re e e o e ns rumen ane
61 (*2)
69 (*5)ngne oom a n re an ngne re ron oor ane g
61 (*2)
69 (*5)
61 (*2)
69 (*5)
61 (*2)
ngne re an ngne oom a n re ron e o ngne oom o.
69 (*5)
61 (*2)
69 (*5)
61 (*2)
69 (*5) ng ne re an oor re ron oor ane g
64 (LHD)
72 (RHD)
64 (LHD)
ns rumen ane re an ng ne oom an re n er e ns rumen ane
72 (RHD)
64 (LHD) Instrument Panel Wire and Instrument Panel Wire (Near the Steering Column)
72 (RHD) Instrument Panel Wire and Instrument Panel Wire (Instrument Panel Reinforcement RH)
: Ground Points
Code See Page Ground Points Location
61 (*2)
69 (*5)
ron oor ane g
61 (*2)
69 (*5)ron oor ane e
61 (*2)
69 (*5)ng ne oc
64 (LHD)
72 (RHD)ns rumen ane e n orcemen
* 1 : LHD 2TR–FE * 2 : LHD 2KD–FTV * 3 : LHD 5L–E * 4 : RHD 2TR–FE * 5 : RHD 2KD–FTV * 6 : RHD 5L–E * 7 : 2TR–FE
* 8 : 2KD–FTV, 5L–E